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Argentina weather in December 2025
Expect 28°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Argentina in December based on long-term weather averages. There is usually 9 days with some rainfall and 92 mm of average monthly rainfall in December.
- 28°C max day temperature
28 - 8 hours of sunshine per day
- 9 days with some rainfall
9 - 18°C min night temperature
18 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 92 mm of monthly rainfall
92 - 11+ (Extreme) UV index
11 - 23°C sea temperature
23
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Expires at 23:59 on Friday 28th Feb 2025 · View all Travelsphere offers
The December weather guide for Argentina (Buenos Aires) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Argentina destinations
Below are average maximum temperatures at popular countries, regions and places in Argentina in December. Select a holiday destination to see more weather parameters.
All Argentina destinations
- Bahia Blanca
- Buenos Aires
- Comodoro Rivadavia
- Cordoba
- El Calafate
- Iguazu Falls
- Mar del Plata
- Mendoza
- Rosario
- Salta
- San Carlos de Bariloche
- San Miguel de Tucuman
- Ushuaia
Metric (°C / mm) | Imperial (°F / inches)
More about Argentina
How hot is it in Argentina in December?
Daytime temperatures usually reach 28°C in Buenos Aires, Argentina in December with moderate heat and humidity, falling to 18°C at night.
How sunny is it in Argentina in December?
There are normally 8 hours of bright sunshine each day in Buenos Aires, Argentina in December - that's 57% of daylight hours.
How warm is the sea around Argentina in December?
The average sea temperature around Buenos Aires, Argentina in December is 23°C.
Does it rain in Argentina in December?
There are usually 9 days with some rain in Buenos Aires, Argentina in December and the average monthly rainfall is 92mm.
Argentina December sunrise & sunset times
Browse the sunrise and sunset times for Argentina in December 2025. Select a month to view Argentina sunrise and sunset times for the next 12 months. The Argentina sunrise and sunset times shown below are for Buenos Aires.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Monday, 1st December 2025 | 05:34 | 19:52 |
| Tuesday, 16th December 2025 | 05:35 | 20:04 |
| Wednesday, 31st December 2025 | 05:44 | 20:10 |
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